Belleville Weather in December

The climate in Belleville during December can be summarized as cool and a little damp.

December is in the winter in Belleville and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 6°C (42°F), whilst at night -2°C (29°F) is normal.

On average December is the 5th driest month of the year in Belleville with around 93mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.

On the flip side this corresponds to an average of 5 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Belleville in December 2025.